#include <iostream>
using namespace std;
int main() {
    int s, p[32]; cin >> s;
    for (int i = 0; i < 32; i++) cin >> p[i];
    int second = p[2] - 1;
    if (s >= p[0]) cout << "sidekick";
    else if (s >= second && s > 40) cout << "sgnd";
    else if (s >= 40) cout << "cxq";
    else cout << "kiku";
}

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